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Halogens have maximum negative electron ...

Halogens have maximum negative electron gain enthalpy in the respective periods of the periodic table. Why?

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Fluorine is the most electronegative element and cannot exhibit any positive oxidation state. Other halogens have d orbitals and therefore, can expand their octets and show + 1, + 3, + 5 and + 7 oxidation states also.
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Why do halogens have maximum negative electron gain enthalpy in the respective periods of the periodic table?

(a) Halogens have maximum negative gain enthalpy in the respective periods of the periodic table. Why? (b) Although electron gain enthalpy of fluorine is less negative as compared to chlorine, fluorine is a stronger oxidising agent than chlorine . Why? Fluorine exhibits only-1 oxidation state, whereas other halogens exhibit +1,+3,+5, and +7 oxidation states also. Explain.

(a) Halogens have maximum negative gain enthalpy in the respective periods of the periodic table. Why? (b) Although electron gain enthalpy of fluorine is less negative as compared to chlorine, fluorine is a stronger oxidising agent than chlorine . Why? Fluorine exhibits only-1 oxidation state, wherease other hlaogens exhibit +1,+3,+5, and +7 oxidation states also. explain.

S has more negative electron gain enthalpy than O why ?

Electron gain enthalpy will be positive in

If each orbital can take maximum of three electrons, the number of elements in the third period of the periodic table will be:

Why do noble gases have positive electron gain enthalpies?

Which halogen has highest value of electron gain enthalpy?

The cation having the largest size in the periodic table is

Discuss the factors affecting electron gain enthalpy and the trend in its variation in the periodic table.

NCERT ENGLISH-THE P-BLOCK ELEMENTS-EXERCISE
  1. Halogens have maximum negative electron gain enthalpy in the respectiv...

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  2. Why are pentahalides more covalent than trihalides?

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  3. Why is BiH3 the strongest reducing agent amongst all the hydrides of g...

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  4. Why is N(2) less reactive at room temperature ?

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  5. Mention the conditions required to maximise the yield of ammonia.

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  6. How does ammonia react with a solution of Cu(2)^(+)?

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  7. What is the covalence of nitrogen in N2O5?

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  8. Bond angle in PH(4)^(+) is higher than that in PH(3).Why ?

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  9. (a)What happens when white phosphorus is heated with concentrated NaOH...

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  10. What happens when (A)PCl(5) is heated. (B)PCl(5) is reacted with h...

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  11. Write a balanced equation for the hydrolytic reaction of PCl5 in heavy...

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  12. What is the basicity of H(3)PO(4) ?

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  13. What happens when (A)PCl(5) is heated. (B)PCl(5) is reacted with h...

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  14. List the important sources of sulphur.

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  15. Write the order of thermal stability of the hydrides of group 16 eleme...

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  16. Why is H(2)O a liquid and H(2)S a gas?

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  17. Which of the following does not react with oxygen directly? Zn,Ti,Pt,F...

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  18. Complete the following reactions: (i) C(2) H(4) + O(2) to (ii)...

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  19. Why does O3 act as a powerful oxidising agent?

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  20. How is O(3) estimated quantitatively ?

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  21. What happens when sulphur dioxide is passed through an aqueous solutio...

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